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madsmtm/flask_automatic_jsonify.py

Created March 26, 2019 09:01
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Automatic JSON serialization for Flask
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flask_automatic_jsonify.py
# Credit to:
# - http://derrickgilland.com/posts/automatic-json-serialization-in-flask-views/
# - https://blog.miguelgrinberg.com/post/customizing-the-flask-response-class
from flask import Response, Flask, jsonify
class AutoJSON(Response):
@classmethod
def force_type(cls, response, environ=None):
"""Override to convert list & dict returns to json."""
if isinstance(response, (list, dict)):
response = jsonify(response)
return super(Response, cls).force_type(response, environ)
class CustomFlask(Flask):
"""Override Flask default response class."""
response_cls = AutoJSON
app = CustomFlask(__name__)
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